UPDATE: Power has been restored to Terminal 2 at Sydney Airport but expect delays. Airlines have recommenced check-in for flights not cancelled by the power outage this morning however travellers are warned to expect extensive delays as they clear the backlog of flights.

Virgin and Jetstar have offered a refund to passengers who choose not to fly today or to change their flight for free within 30 days.

Sydney Airport released the following statement regarding the incident.

“Power has now been fully restored at Sydney Airport T2 Domestic terminal.

Security screening has recommenced and airlines are operating check-in counters and facilities.

We are working to move passengers through the terminal as quickly as possible.

Sydney Airport apologises for any inconvenience caused by the power interruption.”

We have recommenced check-in for guests at SYD Domestic T2, however there are still some delays. Latest details here: http://t.co/qGU8liegLJ

Travellers at Sydney Airport are facing major delays after a power outage severely affected operations at Terminal two this morning.

Passengers arrived at the airport to be met with closed check-ins, black outs, empty baggage carousels and delayed flights.

The outage has hit travellers around the country with locals in Brisbane and Adelaide reporting a knock-on affect from the delays.

Brisbane locals planning on heading to Sydney have been warned to not go to the airport and two flights out of Adelaide Airport were cancelled this morning with the airlines warning of flow-on delays on the remaining 18 flights out of Adelaide.

Brisbane band The Cairos, performing at The Wine Underground in Adelaide tonight, tweeted two hours ago: “Anyone got a private jet and wanna fly us to our show in Adelaide tonight?”

Power was slowly returned to the airport with a substation being blamed for causing the interruption that affected back-up power sources. Sydney Airport released the following statement:

Domestic passengers on Virgin, Jetstar and Tiger Airways have all been affected by the outage with passenger processing facilities failing. Qantas is unaffected, however some passengers are claiming Qantas prices have been jacked up since the shutdown.

A Virgin spokeswoman said that while it cannot yet provide details of how many flights and passengers are affected by the blackout, it is advising its passengers to “refrain from turning up to Sydney Airport at this time.”

“Passengers who choose not to fly with us today as a result of the power outage can retain a refund or change their flight for free within 30 days,” the spokesman said.

“We are advising all our passengers about the current situation through social media channels and through constant public announcements at the airport.”

Airport chaos following a power outage. Picture: Kate Schneider.Source:news.com.au

A spokesperson for Sydney Airport confirmed the incident.

“We are currently experiencing a power outage at Terminal two domestic airport. We are working to identify the source of the issue and rectify it as quickly as possible.”

Power interruption at T2 Domestic terminal causing delays. We are working to resolve the issue ASAP and apologise for any inconvenience.